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WHSM30101-2PG Single Port SMD 10G PIN30 LAN Transformer
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LAN Transformer

WHSM30101-2PG 10GBASE-T PoE+ LAN Transformer

Single-port 10GBASE-T LAN transformer (Ethernet transformer): 30-pin SMD, 1500 Vrms isolation, PoE++ (up to 1200 mA). Operating temperature 0 to +70 °C.

Data rate
10GBASE-T
Ports
Single port
Mounting
SMD
Isolation voltage
1500 Vrms
PoE
PoE++ (up to 1200 mA)
Operating temperature
0 to +70 °C
WHSM30101-2PG LAN Transformer perspective view

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01Specifications

WHSM30101-2PG specifications

Key attributes

ParameterValue
Data rate 10GBASE-T
Ports Single port
Operating temperature 0 to +70 °C
PoE PoE++ (up to 1200 mA)
Mounting SMD
Pins 30
Pitch 1.02 mm

Electrical

ParameterValue
Isolation voltage 1500 Vrms

Values from published data for this part (parameters, FAQ and evaluation report). The datasheet prevails.

WHSM30101-2PGNeed samples, or a value that is not in this table? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

02Applications

Where WHSM30101-2PG is used

  • Switches and routers
  • Wireless access points
  • IP cameras
  • Industrial control devices

Typical application

Ethernet PHYWHSM30101-2PGRJ45 jackTD+1 TX+TD−2 TX−RD+3 RX+RD−6 RX−ESD / TVS (optional)TX · 1CT:1CTRX · 1CT:1CTCTCTPHY-side CT: bias per PHY typeR1 75 ΩR2 75 ΩC1 1000 pF / 2 kVBob Smith terminationShield to chassis

The transformer isolates the PHY from the cable and couples the TX and RX differential pairs to the RJ45 jack.

Center-tap biasing on the PHY side depends on the PHY type (voltage-mode or current-mode).

Typical application for reference. Follow the PHY vendor's reference design.

Design notes

  1. 01Connect the center taps according to your PHY type.Voltage-mode and current-mode PHYs need different center-tap biasing; a mismatch can break auto-negotiation.Check with your PHY →
  2. 02Terminate the line-side center taps with a Bob Smith network.It gives common-mode noise a defined path to chassis ground and helps EMC.
  3. 03Add line-side surge protection for outdoor or long-cable ports.Residual surge energy through the transformer can still damage the PHY.Troubleshooting guide →

Reference designs by application:Industrial ControlSecurity MonitoringData Communication

WHSM30101-2PGNot sure it fits your PHY and layout? An engineer can check your design. Get a Quote or Samples + Add to Inquiry
  • WHSM30101-2PG Datasheet (PDF)2024-11-25 · This part Download ↓
  • 3D model (STEP)2026-06-24 · This part Download ↓
  • PCB Layout / Package2025-12-29 · This part Download ↓
  • LAN Transformer Reliability TestLatest · Product family View →
  • LAN Transformer EU RoHS ReportLatest · Product family View →
  • REACH SVHC test reportLatest · Communication electronic components View →
WHSM30101-2PGNeed another file format, or samples to test? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

04Quality

Quality and compliance

DocumentNo.Issued / tested byDateApplies toActions
Certificate Certificate · Company ISO 9001:2015No. 19826Q02503R101 Quality management systemBeijing Xinjiyuan Certification Co., Ltd.Valid 2026-10-17 to 2029-10-16
19826Q02503R101 Beijing Xinjiyuan Certification Co., Ltd. Valid2026-10-17 to 2029-10-16 Company View PDF → Verify → Scope: R&D and sales of precision electronic connectors
Certificate Certificate · Company ISO 14001:2015No. 19826E01323R101 Environmental management systemBeijing Xinjiyuan Certification Co., Ltd.Valid 2026-10-17 to 2029-10-16
19826E01323R101 Beijing Xinjiyuan Certification Co., Ltd. Valid2026-10-17 to 2029-10-16 Company View PDF → Verify → Scope: R&D and sales of precision electronic connectors
Test report Test report · LAN transformers EU RoHSNo. WTH26H06190301C 2011/65/EU and (EU) 2015/863, 10 substancesWaltek Testing Group HCT (Shenzhen) Co., Ltd.Issued 2026-07-31
WTH26H06190301C Waltek Testing Group HCT (Shenzhen) Co., Ltd. Issued2026-07-31 LAN transformers View PDF →
Test report Test report · Communication electronic components REACH SVHCNo. WTH26H06167853C 253 substancesWaltek Testing Group HCT (Shenzhen) Co., Ltd.Issued 2026-07-01
WTH26H06167853C Waltek Testing Group HCT (Shenzhen) Co., Ltd. Issued2026-07-01 Communication electronic components View PDF →
Test report Test report · Product family Reliability test report
— — — Product family View PDF →

ISO certificates cover VOOHU's management systems. RoHS and REACH test reports cover tested samples of each product family.

05Ordering

Ordering and delivery

05.1

Samples

Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project.

Get a Quote or Samples →

06Compare

Same-series Comparison

Red marks values that differ from this part; data from the published parameters of each part.

Parameter WHSM30101-2PGThis part WHSM24P02N0 WHSM24P01N0
Data rate 10GBASE-T 10GBASE-T 10GBASE-T
Mounting SMD SMD SMD
Ports Single port Single port Single port
Pins 30 24 24
Pitch 1.02 mm 1.0 mm 1.0 mm
Operating temperature 0 to +70 °C −40 to +85 °C −40 to +85 °C
Isolation voltage 1500 Vrms 1500 Vrms 1500 Vrms
PoE PoE++ (up to 1200 mA) Not PoE rated Not PoE rated
WHSM30101-2PGNot sure which part in the series fits? Ask our FAE team which one to sample. Get a Quote or Samples + Add to Inquiry

07FAQ

FAQ LAN Transformer: WHSM30101-2PG

Is the 1200 mA figure for the WHSM30101-2PG per channel or per port?

Per magnetic channel. The datasheet for the WHSM30101-2PG states PoE Support 60W with 1200 mA of DC balance current per channel, and gives no full-channels total. That means the port total cannot be obtained by multiplying 1200 mA by the number of channels; the figure simply is not in the current document.

Size balanced copper paths against 1200 mA each, taking the width from your actual copper thickness and permitted rise. If the project needs a controlled port total for its power budget, ask us for it before committing the design.

The WHSM30101-2PG is a 30-pin part — can it replace a 24-pin 10G transformer from the same range?

Not as a drop-in. The WHSM30101-2PG comes in a 30-pin package, so its pin count and land pattern differ from the 24-pin parts that make up most of this speed class, and changing to it is a board revision rather than a second source. The 10G electrical block is largely common across the range, so the differential signalling design usually carries over; the footprint, routing and centre-tap return paths do not.

Check the pads against the current WHSM30101-2PG package drawing before release, not against another part's drawing.

What equipment is the WHSM30101-2PG suitable for?

The WHSM30101-2PG suits indoor 10G powered ports where the component temperature stays between 0 °C and +70 °C. Typical uses are powered ports on enterprise switches, access points and network cameras, and 10G power-sourcing boards inside racks. Budget the port against 1200 mA per magnetic channel, as the datasheet publishes no full-channels total.

The -40 °C to +85 °C storage range of the WHSM30101-2PG is what the part survives unpowered and cannot be used as an operating condition; for powered operation below 0 °C, move to a wide-temperature part in the 10G BASE-T range.

08Support

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